Slide support for x-ray heads



Dec. 12, 1939. H. N. HENRY SLIDE SUPPORT FOR X-RAY HEADS Filed Aug. 6, 1937 ...J&

INVENTOR fi AQQ V/L/A'A/F V; B I

ATTORNEY Patented Dec. 12, 1939 UNITED s'rss PTENT OFFEQE signer to The Kelley-Koett Manufacturing Gompany, Inc, Covington, Ky., a corporation of Ohio Application August 6, 1937, Serial No. 157,765

4 Claims.

This invention relates to a supporting slide for X-ray heads, ultra-violet lamps and the like.

Among the objects of the invention is to provide an easily extended sliding support of this nature which when not extended, does not overhang the column or standard to which it is attached. This is an important matter because it saves floor space, such space being expensive on account of the central locations necessary for medical specialists. The solid boom heretofore used, cannot be shortened.

In the drawing, Figure 1 is a side elevation of an X-ray apparatus showing the support extended. In dotted lines the unextended position is shown.

Figure 2 is a plan view in section taken along the lines 2-2 of Figure 1.

Figure 3 is a half-section of the support taken on the line 3-3 of Figure 2.

Figure 4 is a side elevation of the disassembled component slides of the support.

Fig. 5 is a view corresponding to Fig. 4 except that the slides are shown in plan view.

Fig. 6 is a vertical section (except for the rod) of the locking device shown in Fig. 2 taken on the line 6-6 of that figure.

In Figure 1, ill is the conventional base, II the standard and I2 the vertically movable carriage of an X-ray apparatus. A head I3, that is, the X-ray tube and the transformer assembly, is carried in a fork I4 upon trunnions E5. The fork is pivoted at It to the first slide ii. The latter is also of fork shape and is arranged to slide into the channel-shaped side arms I8 of the second or intermediate slide #19. A channel-shaped cross bar 26 prevents the arms from spreading and is adapted to receive the cross bar ll of the fork I1.

Extending outwardly from fork N there is a pair of guides 22 adapted to be accommodated between the rollers 23. A plurality of rollers 24 make contact with the upper and lower surfaces of the guides 22 respectively. Between these two sets of rollers 23 and 24, horizontal and vertical alignment is preserved and a construction is provided which does not bind even under heavy load.

A strong boxlike receiving slide 25, is fitted about the column IE and carried by carriage I2. Its functions are those of housing the two slides I9 and I! and of supporting them and the head I 3. For alignment, strength and smooth operation, therefore, slide I 9 is fitted with vertical rollers 26 and horizontal rollers 21 which enable slide I9 to fit snugly inside slide 25.

In order to show in detail how each slide is adapted to fit inside its next larger neighbor Figure 4 shows the three coacting slide members disassembled. Figure 5 shows the same in side elevation. Each separate member is placed opposite the opening which it will enter when some force is applied from the right hand side, sumcient 5 to make the members nest, i. e, fit snugly inside each other and inside the receiving slide 25.

The assembly of slides is nested, therefore, when the head is not extended, as shown in Figure 3, each smaller slide inside the next larger. When extended as shown in Figure 2 there is no bending and no looseness. Since the carriage can be rotated on the column, a truly universal movement is provided for the head I3, 1. e. the X-ray beam can be directed at substantially any angle. When the slides or forks are nested, there is no projection beyond the limits of-receiving slide 25 because all of the forks straddle the column.

A locking device which is operative when the slides are either extended or nested, comprises a square rod 28 which is considerably shorter than the extended slides. The rod has a handle 29 by which it may be rotated. The rod is also slidable in a channel ilhwhich is extended by a cap 3! 25 which extends s ightly beyond. the column II. In the channel 35 there is a spring-pressed detent 32 about which is fitted a slidable link 33. The link is of value in making stereoscopic radiographs as will be hereinafter explained. By rotating the square bar 28 a quarter turn, its edges instead of its faces are brought against the detent, causing a much greater holding or locking effect, sufficient to keep the parts on the same relative position against a considerable force. 35

In a detailed showing in Fig. 6 these parts are shown in a section taken on the line 56 of Fig.

2. From Fig. 6 it will be seen that the rod 28 is there shown in locked position because the detent 32 is depressed by one of the square edges of the rod. If a tighter locking of the rod is desired it may be had by tightening a thumb screw 34 acting between the lower edge of housing 33 and the opening thru which the rod passes.

When the slides are to be nested, thebar is again rotated a quarter. turn so that the rod is freely slidable into the channel 3! and cap 35.

It may be locked when in this position also in the same manner.

When a stereoscopic radiograph is to be made, the first. exposure is made with the apparatus in the position shown in Fig. 2. The slides are then unlocked and the head l3 pushed in until the other shoulder of slidable link 33 abuts the spring pressed detent 32 on the side other than where these members abut in Fig. 2. The second exposure is then made.

In Fig. 6 the gauging parts 30, 32 and 33 are shown in the relation assumed when the slides are pushed all the way toward the column. The first radiograph for stereoscopic work may be taken when the slides are in this position. Therefore, in order to move the head to a stereoscopic difference, it is necessary to pull it out because there is no other horizontal movement possible. This movement is then made with the result that the slidable link 33 will then abut the left side of detent 32 as shown in Fig. 2.

I claim as my invention:

1. In an X-ray apparatus or the like, a base, a column arising therefrom, a carriage vertically movable thereon, a box-like receiving member on said carriage and surrounding said column, a fork slide adapted to be slidably nested in the receiving member a smaller slide adapted to nest inside of the fork slide, a load object rotatably attached to the last mentioned slide, a square rod traversing each slide and the receiving member and means cooperating with said rod for locking said slides.

2. An X-ray apparatus according to claim 1 in which the square rod is slidable and rotatable to a locked position.

2. An X-ray apparatus according to claim 1 in a column arising therefrom, a carriage vertically movable thereon comprising a box-like receiving member rotatably mounted on said carriage and surrounding said column, a fork slide adapted to be slidably nested in the receiving member, a smaller slide adapted to nest inside of the fork slide, a load object rotatably attached to the last mentioned slide, a square rod traversing all slides and the receiving member, a spring pressed de tent cooperating with said rod to lock said slides and a slidable link tightly attachable to said rod and extending over said detent.

4. In an X-ray apparatus or the like, a base, a column arising therefrom, a carriage vertically movable and rotatable thereon, a box-like receiving member surrounding said column, a plurality of forks adapted to be extended from or nested within said receiving member, a square rod traversing all of said slides and the receiving member, a spring-pressed detent cooperating with said rod to lock said slides and a slidable link tightly attachable to said rod and extending about said detent.

HARRY N. HENRY. 

